3Com MSR 50 Series Configuration Manual page 1253

normally, you must perform this configuration on all the devices in the IPv6
PIM-SM domain and specify the same RP address.
Follow these steps to configure a static RP:
To do...
Enter system view
Enter IPv6 PIM view
Configure a static RP
Configuring a C-RP
In an IPv6 PIM-SM domain, you can configure routers that intend to become the
RP as C-RPs. The BSR collects the C-RP information by receiving the C-RP-Adv
messages from C-RPs or auto-RP announcements from other routers and
organizes the information into to an RP-Set, which is flooded throughout the
entire network. Then, the other routers in the network calculate the mappings
between specific group ranges and the corresponding RPs based on the RP-Set.
We recommend that you configure C-RPs on backbone routers.
To guard against C-RP spoofing, you need to configure a legal C-RP address range
and the range of IPv6 multicast groups to be served on the BSR. In addition,
because every C-BSR has a chance to become the BSR, you need to configure the
same filtering policy on all C-BSRs.
Follow these steps to configure a C-RP:
To do...
Enter system view
Enter IPv6 PIM view
Configure an interface to be a
C-RP
Configure a legal C-RP
address range and the range
of IPv6 multicast groups to be
served
n
When configuring a C-RP, ensure a relatively large bandwidth between this
■
C-RP and the other devices in the IPv6 PIM-SM domain.
An RP can serve multiple IPv6 multicast groups or all IPv6 multicast groups.
■
Only one RP can forward IPv6 multicast traffic for an IPv6 multicast group at a
moment.
Enabling embedded RP
The Embedded RP mechanism allows a router to resolve the RP address from an
IPv6 multicast address so that the IPv6 multicast group is mapped to an RP, which
can take the place of the statically configured RP or the RP dynamically calculated
Use the command...
system-view
pim ipv6
static-rp ipv6-rp-address
[ acl6-number ] [ preferred ]
Use the command...
system-view
pim ipv6
c-rp ipv6-address
[ group-policy acl6-number |
priority priority | holdtime
hold-interval |
advertisement-interval
adv-interval ] *
crp-policy acl6-number
Configuring IPv6 PIM-SM
Remarks
-
-
Optional
No static RP by default
Remarks
-
-
Optional
No C-RPs are configured by
default.
Optional
No restrictions by default
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